Interwell coherent tunneling in coupled quantum wells

A theoretical investigation of interwell coherent tunneling in coupled quantum wells is presented. The time-dependent picture of coherent tunneling of an electron wave packet is obtained by the application of the time-development operator of the time-dependent Schrödinger equation. The interwell tunneling is shown for under bias, resonance, and over bias conditions. In addition, the tunneling probability and tunneling time based on this time-dependent analysis are calculated. This method improves upon the conventional model that is currently in use for the coherent tunneling in coupled quantum wells.